[ 1579.783831][T19941] gre: GRE over IPv4 demultiplexer driver
[ 1580.317923][T19964] ip_gre: GRE over IPv4 tunneling driver
[ 1597.440727][T20536] ip6_gre: GRE over IPv6 tunneling driver
[ 1605.253389][T20880] ping (20880) used greatest stack depth: 23224 bytes left
[ 1608.152608][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1610.199583][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1612.055590][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1614.104581][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!